What is the process of the characteristics of the bird s suitability for flight

What are the characteristics of a bird's suitability for flight.

The specific gravity of the bird is light, the bones are hollow, the feathers are also, the body is streamlined, the airfoil can produce upward lift, the wing surface area is much larger than the body, suitable for gliding, and the body excretion is directly not retained to reduce the empty weight.

1. The body of birds is streamlined, the body surface is covered with feathers, the forelimbs become wings, the bones are light, thin and strong, the chest muscles are developed, and there are air sacs to assist lung breathing.

2. The bones are light in weight and hard in texture, with a towering keel protrusion on the chest, and there is a gas-filled cavity in the middle of the bone.

3. The chest is muscular, and the back muscles are degenerate, which is conducive to pulling the wings.

4. The nervous system and sensory organs are very developed. The heart has four chambers, the number of beats is fast, and the circulatory system is perfect.

5. There are well-developed air sacs, which can not only reduce weight but also form a unique double breathing with the lungs to meet the needs of oxygen and energy consumption when birds fly.

6. Birds have a perfect dual circulation system, and oxygen-rich blood is completely separated from hypoxic blood to ensure the demand for oxygen for flight.

7. Large amount of food and fast digestion. The rectum is short and thick, and feces cannot be stored, so frequent bowel movements, the bladder of birds disappears, and urine is excreted with feces, which is conducive to reducing the burden during flight.

8. In short, birds are a class of animals with feathers on the body surface, forelimbs specialized into wings, the ability to fly quickly, air sacs inside, and high and constant body temperature.

The plumage is abundant, and the shape of the body and wings allows for the full use of updrafts for gliding. The intestines are very short, so you can excrete them while flying (I have experienced it myself), reducing the burden of flying. The bones are hollow and weigh very little.

There are many air sacs in the lungs, and the inhaled air can make one contact with the capillaries in the lungs, and the exhaled air can make a second contact, which can fully absorb oxygen. The pectoral muscles are strong, and the wings are very powerful. I seem to have heard that there is a lot of substance in muscle cells that can provide a lot of energy, but I can't remember it.

The feathers are abundant, and the muscles are mostly around the wings, and the body is streamlined.

The forelimbs are winged, the pectoral muscles are developed, the sternum is protruding, the food is large, and the digestion is fast.

What are the characteristics of a bird's suitability for flight.

The wings of birds are the first condition for them to have flying skills. Under the same conditions of having wings, some birds can fly very high, very quickly, very far; Some birds can only hover, glide, or even fly at all. It can be seen that just wings have a lot of knowledge.

The structure of a bird's wings is no less complex than the bird itself. If the feathers of the bird's wings are constructed, the principle of aerodynamics can be skillfully applied, and when they are fanning up and down or pressing up and down, they can push the air and fly forward using the principle of reaction; The structure of the feathers is reasonable, which can effectively reduce the air resistance encountered during flight, and some can also play a role in de-trembling and noise reduction. There are great differences in the wings of various species of birds, so that the difference in wings alone creates many excellent and average "pilots".

1. Muscular, muscles account for more than 70% of body weight; 2. Bone hollow, suitable for flying; 3. Some birds also have well-developed air sacs in their bodies.

The structural features of birds are always adapted to their lives, such as the forelimbs become wings, with large regular feathers, arranged in a fan shape, suitable for flight; The body is streamlined, which can reduce drag when flying; There are air sacs in the body to assist the lungs to complete double breathing and can supply sufficient oxygen; Some bones are hollow, some bones are healed, and the rectum is very short, which can reduce weight; The pectoral muscles are well developed, which is conducive to pulling the wings to complete the flight maneuver Large appetite and strong digestion ability, which can provide sufficient nutrients for the flight

Therefore, the answer is: the forelimbs become wings, with large regular feathers, arranged in a fan-shaped, suitable for flight; The body is streamlined, which can reduce drag when flying; There are air sacs in the body to assist the lungs to complete double breathing and can supply sufficient oxygen; Some bones are hollow, some bones are healed, and the rectum is very short, which can reduce weight; Eat a large amount of food, strong digestion ability, can provide sufficient food for the flight; The pectoral muscles are well developed, which is conducive to pulling the wings to complete the flight action.

The bones are cavitated, lightweight, and solid.

What are the characteristics of a bird's suitability for flight.

The structural features of birds are always adapted to their lives, such as the forelimbs become wings, with large regular feathers, arranged in a fan shape, suitable for flight; The body is streamlined, which can reduce the drag when flying Q; There are air sacs in the body to assist the lungs to complete double breathing and can supply sufficient oxygen; Some bones are hollow, some bones are healed, and the rectum is very short, which can reduce weight; The pectoral muscles are well developed, which is conducive to pulling the wings to complete the flight maneuver Large appetite and strong digestion ability, which can provide sufficient nutrients for the flight

Therefore, the answer is: in appearance: the body is streamlined, the body surface is feathered, and the forelimbs are winged.

Exercise: well-developed pectoral muscles, keel protrusions, long bones are hollow, light, thin but strong in digestion: large appetite, strong digestion, can provide sufficient energy; The rectum is short, and the stool can be expelled in time on the breath

There are well-developed air sacs, double breathing, and strong oxygen supply capacity: the heart has four cavities, two circulation routes, and the heart beats fast.